[hrudham]

> To opt-out from our anonymization of your personal information to perform data analyses, please provide your Mastercard or Maestro payment card number

Does this mean you're opting out of the anonymization, but not the collection of personal information?

The wording here could definitely be improved.

[m463]

I suspect the wording is deliberately confusing.

[Lio]

I would says it's almost definitely written to be confusing. See their privacy FAQ also:

> Does Mastercard share transaction data?

> We do not share transaction data without consent or as otherwise legally permitted such as in the context of fraud prevention.

That's a yes or no question. Instead of answering it with a resounding YES they instead reply with some waffle about "legally permitted context".

They also miss out that they sell services that access that data. So an external party might not be able to see it directly but they can pay Mastercard to do the same customer monitoring for them.

[bertil]

I don’t know if it’s deliberately confusing, but it certainly was reviewed by several lawyers.

[nurettin]

It is deliberately confusing, but ultimately the meaning behind seems to be "this particular data collection is not for personal advertisements, we got that covered in some other way".